Identifying DNA sequences through has helped to identify and better understand similarities in DNA sequences across species. Group of answer choices

paleontology

chemistry

comparative genomics

geology

The following image is of a diatom. it lives in water and gets food from photosynthesis. it is encased in a hard shell made of something similar to glass or sand . a diatom is a(n) because it has a) multi-celled organism; specialized parts. b) vertebrate; a skeleton. c) insect; an exoskeleton. d) single-called organism; only one cell.

Why are scientists concerned about the depletion of the ozone levels in the stratosphere?

Read each description below and determine to which stage of sleep each pertains. then click and drag each box into the appropriate category below.